Surface Mount Transient Voltage Suppressors

Surface Mount Transient Voltage Suppressors
SM8Z Series 14 To 43 V 6600W
Description
The SM8Z series is designed specifically to protect sensitive
electronic equipment from voltage transients induced by lightning
and other transient voltage events.
Working Voltage: 14 to 43 V
Peak Pulse Power: 6600 W
Features

Glass passivated chip

6600 W peak pulse power capability with a
Mechanical Data
10/1000 us waveform, repetitive rate (duty
cycle):0.01 %

T J = 175 °C capability suitable for high reliability
and automotive requirement



Case: DO-218AB
Epoxy: UL 94V-0 rate flame retardant

Polarity: Heatsink is anode
Primary Characteristics
Meets ISO7637-2 surge specification (varied by test
condition)Meet AEC-Q101 requirement

Low leakage

Uni-directional polarity

Excellent clamping capability

Very fast response time

RoHS compliant
VRWM
14V to 43V
PPPM (10/1000µs)
6600W
PPPM (10/10000µs)
5200W
PD
8W
I FSM
700A
T J max.
175°C
Package
DO-218AB
Applications
Use in sensitive electronics protection against voltage transients
induced by inductive load switching and lighting, especially for
automotive load dump protection application
Maximum Ratings and Thermal Characteristics (T A =25 ℃ unless otherwise noted)
Parameter
Symbol
with 10/1000µs waveform
Peak Pulse Power Dissipation
Value
Units
6600
with 10/10000µs waveform
PPPM
5200
W
Power Dissipation on Infinite Heat Sink at TL=25°C (Fig.1)
PD
8
W
Peak Pulse Current with a 10/1000µs waveform
I PP
See Next Table
A
Peak forward surge current 8.3 ms single half sine Wave
I FSM
700
A
T J , T STG
–55 to +175
°C
R θJC
0.90
°C /Watt
Operating junction and storage temperature range
Typical thermal resistance, junction to case
Note:(1)Non-repetitive current pulse per Fig.2 and derated above T A = 25 °C per Fig.1
UN Semiconductor Co., Ltd.
Revision February 2, 2015
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@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Surface Mount Transient Voltage Suppressors
SM8Z Series 14 To 43 V 6600W
Electrical Characteristics (@ 25℃ Unless Otherwise Specified )
Part Number
Stand-Off
Voltage
VMW
(V)
Breakdown
Voltage
VBR (V)
MIN.
MAX.
Test
Current
IT
(mA)
14
15.60
17.20
SM8Z15A
17.20
15
16.705
18.50
16.70
10
150
SM8Z16A
16
17.80
19.70
18.50
14
SM8Z17A
175 10
18.90
20.90
150
15
284.0
SM8Z18A
18
20.00
22.10
270.0
23.2
SM8Z20A
2024.4
22.20
24.50
SM8Z16A
SM8Z1
SM8Z22A
22
24.40
26.90
17.80
5A
SM8Z24A
24
26.70
29.50
19.70 5 10
16.70
SM8Z26A
26
28.90
31.90
150 16
18.50 5
28
31.10
34.40
SM8Z28A
254.0 26.0
10 150
30
33.30
36.80
SM8Z30A
SM8Z17A
15
33
36.70
40.60
SM8Z33A
18.90
270.0
36
40.00
44.20
SM8Z36A
20.90 5 10
24.4
SM8S40A
40
44.40
49.10
150 17
SM8Z1
SM8S43A
43
47.80
52.80
239.0 27.6
6A
NOTE: Surge current waveform
is
defined
at
10/1000uS
waveform
SM8Z18A
17.80
20.00
19.70 5
Ratings and Characteristics
Curves (T A =25℃
22.10 5 10
10 150
150 18
16
226.0
29.2
254.0
Figure 1 – Power
Derating
Curve
SM8Z20A
26.0
22.20
SM8Z1
24.50 5 10
7A
150 20
18.90
204.0 32.4
20.90 5
SM8Z22A
10 150
24.40
17
26.90 5 10
239.0
150 22
27.6
186.0 35.5
SM8Z1
SM8Z24A
8A
26.70
20.00
29.50 5 10
22.10 5
150 24
10 150
170.0 38.9
18
SM8Z26A
226.0
28.90
29.2
31.90 5 10
SM8Z2
150 26
0A
157.0 42.1
22.20
SM8Z28A
24.50 5
31.10
10 150
34.40 5 10
20
150 28
204.0
145.0 45.4
32.4
SM8Z30A
SM8Z2
UN Semiconductor33.30
Co., Ltd. 2A
36.80 5 10
24.40
150 30
26.90 5
Revision February 2, 2015
136.0 48.4
10 150
SM8Z33A
22
36.70
186.0
40.60 5 10
35.5
Maximum
Reverse
Leakage I R
@V RWM (uA)
Maximum
I R @V RWM
T J =175
(uA)
Maximum
Reverse
Surge
Current I PP
(A)(1)
Maximum
Clamping
Voltage
V C @I PP (V)
SM8Z14A
5.0
10
150
284.0
23.2
SM8Z15A
5.0
10
150
270.0
24.4
5.0
10
150
254.0
26.0
5.0
10
150
239.0
27.6
5.0
10
150
226.0
29.2
5.0
10
150
204.0
32.4
5.0
10
150
186.0
35.5
5.0
10
150
170.0
38.9
5.0
10
150
157.0
42.1
5.0
10
150
145.0
45.4
5.0
10
150
136.0
48.4
5.0
10
150
124.0
53.3
5.0
10
150
114.0
58.1
5.0
10
150
102.0
64.5
5.0
10
150
95.1
69.4
unless otherwise noted)
Figure 2 - Load Dump Power Characteristics
(10 ms Exponential Waveform)
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@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Surface Mount Transient Voltage Suppressors
SM8Z Series 14 To 43 V 6600W
Figure 4 – Reverse Power Capability
Figure 3 - Pulse Waveform
Package Outline Dimensions Unit: inches (millimeters)
UN Semiconductor Co., Ltd.
Revision February 2, 2015
www.unsemi.com.tw
3/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
Surface Mount Transient Voltage Suppressors
SM8Z Series 14 To 43 V 6600W
SURFACE MOUNT TAPE AND REEL PACKAGING
Recommended Soldering Parameters
UN Semiconductor Co., Ltd.
Revision February 2, 2015
www.unsemi.com.tw
4/4
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.